<?php

require_once 'db_conn.php';
header("content-type:text/html;charset=utf-8");


$username = $_POST['username'];
$password = $_POST['password'];
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);
$password =  md5($password);


$sql = "
    select *
    from user
    where account='$username'
        and password='$password'
    limit 1;
     ";

$result = $conn->query($sql);
if($result->num_rows>0){
    echo "正确！";
}  else {
    echo "用户名或密码错误！";
}
  